Diphenylamine-vinylsulfone



DEHENYLAMINE-VINYLSULFONE Johannes Heyna, Alfred Carl, and Hans Dieter Wagner, Frankfurt am Main, Germany, assignors to Farbwerke Hoechst Aktiengeselischaft vormals Meister Lucius & Bruning, Frankfurt am Main Hochst, Germany, a

company of Germany No Drawing. Application June 4, 1953,

Serial No. 359,642

Claims priority, application Germany June 9, 1952 1 Claim. (Cl. 260-397.6)

The present invention relates to new water-insoluble dyestuffs containing one or two vinylsulfone groups; more particularly it relates to water-insoluble dyestuffs derived from the series of azo-dyestuffs, nitro-dyestutfs and anthraquinone-dyestuffs containing the grouping wherein n stands for one of the numbers 1 and 2.

We have found that new valuable dyestuffs insoluble in water are obtained by introducing into the molecule of dyestuffs, which do not contain a carboxylic acid or sulfonic acid group, one or two vinylsulfone groupings of the formula The vinylsulfone group can 'be introduced into the dyestuif molecule according to one of the known methods, for example, by converting a water-insoluble dyestuff or a primary product into the sulfinic acid or the sodium salt of such acid and then reacting the product with betachlorethyl alcohol or ethylene oxide or a homologue thereof. From the beta-hydroxy-ethylsulfones obtained by such reaction, the compounds containing the grouping 4O2CH=CH2 may be obtained in known manner by way of the beta-chlorethyl-sulfone compound or the beta-hydroxy-ethyl-sulfone compound esterified with sulfuric acid. Dyestuffs of the present kind may also be prepared by subjecting to oxidation a compound containing the grouping -fiCH=CH2 or the grouping -SOCH=CH2. In this way a great number of dyestuffs of the most various classes can readily be ebtained. They may, for instance, be derived from the a series of azo-dyestuffs, nitro-dyestuffs and anthraquinonedyestuffs.

The new water-insoluble dyestuffs containing the vinylsulfone group have a good to very good aflinity for acetate rayon and polyamide fibres or the mixtures thereof. They are absorbed by the fibre in dispersed state'from a weakly alkaline bath, for example, a soap bath, especially in the presence of an emulsifier, and'yield full, clear tints of very. good fas'tness properties.

2,784,204 Patented Mar. 5, 1957' In the case of azo-dyestutfs the vinylsulfone group is preferably present in the diazo-component, it may, however, also be present once or twice'in the coupling component or in both components. In the series of the amdyestuffs, the following examples may be mentioned as showing the types coming into consideration for the present invention:

The azo-dyestufis from diazotized:

As further examples of dyestulfs from other classes the following dyestuffs may be named:

( 1 2.4-dinitro-diphenylamine-4-vinylsulfone,

(2) Z-nitrodiphenylainine-4-vinylsulfone,

(3 N-(2'-nitro-4-vinylsulfony1-phenyl) -morpholine,

(4) 1-aminoanthraquinone-Z-vinylsulfon,

(5 1.4-di-( 3'.3"-vinylsulfonyl)-anilido-anthraquinone,

(6) 1 methylamino 4-- (3 anthraquinone,

(7 The condensation product from S-amino-S-hyd'roXy- 1.4-di-imino-naphthoquinone and l-amino-Z-methoxybenzene-S-vinyl-sulfone.

The following'examplesserve tojillustrate theinven'tion, but they are not intended to limit it thereto; the'parts being by weight unless otherwise stated; the'parts by weight and the parts by volume are related to each other as are kilograms to liters:

Example I 12.3 parts of 1-arnino-4-nitrobenzene-Z (beta-hydroxyeI ethyl'sulfone) are introduced at 255 0-30. C. into,6,0". parts of concentrated sulfuric acid (specific gravity 1.84)

- vinylsulfonyl) anilido The mixture is stirred for 3 hours at 30 C.-35 C., cooled to 5 (1-10 C.and at this temperature diazotized with 25.0 parts of a nitrosylsulfuric acid of 11.5 percent strength. The sulfuric acid solution is stirred for 3 hours at C. C. and then slowly added dropwise to a solution of 9.7 parts of N-butyl-N-beta-hydroxyethyl aniline in 20 parts by volume of 5 n hydrochloric acid, while adding the necessary quantity :of ice. The mixture is stirred for 7 hours while cooling with ice and for 5 hours at room temperature. The dyestuif so obtained is filtered ofi with suction and converted by means of a dilute sodium hydroxide solution into the vinyl-compound of the following formula The dyestutf yields on acetate rayon a beautiful red-violet dyeing of a good'fastness to washing, fulling and light. On polyamide fibre a violet dyeing of similar good fastness' properties is obtained.

Example 2 14.6 parts of the diazo-sulfuric acid ester from l-aminobenzene-Z-(beta-hydroityethylsulfone) of the probable formula SOs-CHz-CHz-O are stirred in an acid solution with 9.6 parts of N-butyl- N beta-hydroxyethyl-aniline until the coupling is complete. The dyestufi is filtered off with suction and converted into the'vinyl-compound with a dilute sodium hydroxide solution.

The dyestufi dispersed in a soap bath dyes polyamide fibre yarn full, yellowish red-orange 'tints of good fastness to water, washing and perspiration.

Example 3 18.3 parts of 1-arninobenzene-4-vinylsulfone are diazotized in the usual manner and coupled in an aqueous alcoholic solution with 16.9 parts of diphenylamine. There is obtained in a good yield the dyestutf of the following formula It dyes acetate rayon from a bath containing 1 gram of soap per litre at 75 C.8 0 C. reddish-yellow tints of very good fiastness to water, washing, sea-water and perspiration good fastness to light. The dyeing can be discharged perfectly white. On polyarnide fibre there is obtained an orange dyeing having likewise very good fastness to wet processing and good fastness to light.

Example 4 Example 5 50.0 parts of 1-aminobenzene-4-(beta-hydroxyethylsulfone), 92.0 pans of sodium-1-amino-4-bromoanthraquinone-Z-sulfonate of 88 percent strength, 50.4 parts of sodium bicarbonate, 260.0 parts of water and 8.0 parts of cuprous chloride are stirred at 65 C.-70 C.

. for about 20 hours. After cooling the dyestufi is filtered oil with suction and washed with a concentrated sodium chloride solution. The moist press cake is heated to C., while stirring, in 1600.0 parts of water, and 200.0 parts of FeSO4.7H2O. To this mixture 260.0 parts of an ammonium hydroxide solution of 28 percent strength are added within /2 hour and the Whole is stirred for 1 hour. Thereupon, 1000.0 parts of hydro chloric acid of 10 percent strength are added and the mixture is 'heated at the boil, filtered off with suction and washed with hot, dilute hydrochloric acid, until the filtrate is free from iron.

The 1-amino-4-(beta-hydroxyethylsulfonyl) anilidoanthraquinone thus obtained in a good yield is introduced at room temperature into 250.0 parts of concentrated sulfuric acid and the whole is stirred until a testsample is clearly soluble in water. At a temperature of 0+5 C., the'sulfuric acid solution is then run in a thin jet, while stirring. into" a mixture of 1200.0 parts of ce 0- Pa ts of Water a d 0 2 arts of di m hydroxide solution of 23 percent strength. A small quantity of acetic acid is then added to the mixture until the reaction is feedly acid, the Whole is heated to 70 C. and filtered off with suction. The dyestuff so obtained corresponds to the following formula It dyes acetate rayon trom a bath containing per litre 1 percen ofdid imi'shosrh i f the condensation'product 'froin'l 'mol. ofisooctylp-henol and 9 mols; of ethylene 'oXide',vio1et tints of very good fastness to washing, fulli-ng and sea-water and very good fastness to light. i

Emma's 6 9.2 parts of 1-arninobenzene-4-vinylsulfone are diazotized in the usualmanner and coupled in a dilute acid solution with 11.7 parts of zanaamnomzmu: b tachlorethylsulfone). The a esanr so obtained is con verted with dilute alkali into thedivinyl-compound which corresponds to the following fortnula S D PGH=CH2 i-saw ing at 99 C.-100 C. in the presence of hydrochloric acid.

the sulfuric acid solution with ice and treatingthe sulfuric acid ester, which has been filtered off,'with "a dilute alkali.

The dyestutf corresponds to the following formula Example 7 which dyes acetate rayon vivid yellow tints of good to very good fastness to washing, fulling and decatizing and very good to excellent fastness to light.

It dyes acetate rayon, from a bath containing per litre 1 percent. of disodium phosphate and 2 percent. of the condensation product from 1 mol. of isooctylphenol and 9 mols of ethylene oxide, reddish-yellow tints of good fastness to washing, fulling, perspiration and rubbing and very good fastness to light.

Example 10 13.5 parts of 1-amino-2.6-dichlorob'enzen'e-4-(beta-hydnoxyethylsulfone) are introduced into 60.0 parts of concentrated sulfuric acid and stirred for some time at 35 C. The sulfuric acid solution is then poured onto ice and diazotized with the calculated quantity of sodium nitrite. The diazo-solution is coupled with 14.5 compound of the following formula colorless crystals melting at 160 C., obtainable by condensing N-methylaniline with 1-aminobenzene-4-vinylsulfone, until the formation of the dyestuif is complete. The dyestuif is filtered off with suction and converted by the action of alkali into thevinyl-compound of the following formula Example 8 13.5 parts of 1-amino-2.6-dichlorobenzene-4-(beta-hydroxyethylsulfone) are introduced into 60.0 parts of concentrated sulfuric acid, the whole is stirred for 3 hours at C. and diazotized at 15 -20 C. with the calculated quantity of nitrosylsulfuric acid. The mixture is poured onto iceand coupled with 5.4 parts of 1-amino-3-methylbenzene. The dyestuff is filtered off with suction, freed from the main quantity of the acid by washing with water and converted by the action of a dilute alkali into the vinyl-compound of the following formula fastness to washing, fulling, perspiration and sea-water CI and good fa'stness to light. Also on polyamide fibre l there are obtained orange tints of very good fastness to CH;=CHSO:ON=NONE, wet processing and to light. 7

Example 11 a a, I

On acetate rayon there is obtained a reddish-yellow dyeing of a good to very good fastness to washing, fulling and light as well as a good to very good fastness to perspiration, sea-water and rubbing. Also on poly-amide fibre there is obtained a reddish yellow of very good fastness to washing and fulling. The dyestufi can be diazotized on the fibre and coupled with various developers.

14.0 parts of 1-amino-2-bromobenzene-4(beta-hydroxyethylsulfone) are introduced into 50.0 parts of con- 'centrated sulfuric acid and the whole is stirred for some time at 35 C. The sulfuric acid solution is poured onto ice and diazotized with the calculated quantity of sodium nitrite. The diazo-compound is then coupled with 112 parts "of the compound of the following formula 0 colorless oil boiling at 220-225 C. under 0.5 mm. pressure, which is obtained by reacting 1 mol. of N-methylaniline with 1 mol. of divinylsulfone. The dyestuff is then Example 9 16.0 parts of 4-amino-2-methyl-1.l-azobenzene-4- (beta-hydroxyethylsulfone) melting at 183 C., obtainable by coupling diazotized l-aminobenzene-4 -(beta-hydroxyethylsulfone) in an acid solution with 1-amino-3- methylbenzene, are made into a paste in the ball-mill with parts y Volume Of 2 n-hydrochlolic acid and 100 compound which correspondsto the following formula parts by volume of water and diazotized, while cooling, with'20 parts by volume of a 2.5 n-sodium nitrite solution. The clarified diazo-solution is slowly run into a soluti-on-of,5.4 parts of 1-hydroxy-2-m-ethylbenzene and 25 parts by volume of a 2 n-sodium hydroxide solution, the medium beingfalw'aysjweaklyalkaline. When the coupling is complete the dyestuffisfiltered off with suc- 156 5, lt lt at 203 (1.204 C' i d-i q, after invention and the tints obtained therewith on acetate being dried, inthe usual manner into the vinyl'compound rayon, which likewise possess good fastness properties:

On acetate rayon a clear orange dyeing is obtained which can be discharged white and has good fastness to 70 wet processing. 7 Also on polyamide fibre there is obtained an orange dyeing of very good fastness to-wet processing. The following table indicates a number of further azo by introducing it into concentrated sulfuric acid, stirring parts of the It dyes acetate rayon clear orange tints of very good converted by the action of alkali into the divinylsulfone dyestuffs which may be prepared according to the present 

